The search strategy found 1007 studies. Thirty-two
studies whose main aim was the exploration of the
epidemiology of pain were identified (Table 1). Two
further studies were included: these had main aims
other than the assessment of pain, but contained
data pertinent to Aim 2 and/or Aim 3 (factorsthat
may affect the experience or development of pain).
One study assessed the verbal descriptors of pain
patientswith lung cancer [17], and the other assessed
pain in patients with lung cancer which affected
the brachial plexusor thoracic spinal